Packing-box.



W. T. SNELL.

PACKING BOX. I

APPLICATION FILED NOV.5,1912.

1,057,363, I Patented Mar. 25, 1913.

WITNESSES INVENTOR Arm/ms COLUMBIA PLANOURAPH co., WASHINGTON. u c,

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\ WILLIAM T. SNELL, 0F BISBEE, ARIZONA.

PACKING-BOX.

Application filed November 5, 1912. Serial No. 729,570.

To all whomit may concern:

Be it known that 1, WILLIAM T. SNELL, a citizen of the United States,and a resident of Bisbee, in the county-0f Cochise and State of Arizona,have invented a new and Improved Packing-Box, of which the following isa full, clear, and exact description.

This invention relates generally to an improved form of packing box ofthe kind described and claimed in Letters Patent No. 1,018,938, grantedto me February 27, 1912.

The present invention is directed to an improved packing boxcharacterized by an arrangement of parts whereby the packing will followthe piston rod or equivalent element when the said rod or element runsout of center.

The invention comprehends a structure which is termed a floatingpacking, which adjusts itself to the piston rod when the piston, becauseof wear or due to non-alinement of the cylinders, runs out of center.

The inventive idea is particularly adapted for use with the inventiondescribed and claimed in the Letters Patent above identified, and in theaccompanying sheet of drawings I have illustrated the inventive ideaapplied to the structure disclosed in such patent.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which like characters of reference indicatecorresponding parts in all the views, and in which- Figure 1 is a topplan view of the packing box, partly sectional; Fig. 2 is a sectionalview on the line 2-2 of Fig. 1; while Fig. 3 is a sectional view on theline 33 of Fig. 2.

The piston rod of the pump, or equivalent mechanism, is designated 1,while the glands are designated 2 and 3, which glands are adapted to bebrought into engagement in stuiting boxes carried by the cylinder headsof the said pump or engine; the packing box proper comprises thecylindrical elements at, 5 having the peripheral flanges G-7 maintainedin spaced relation by means of spacer blocks 8 and bolts and nuts 9. Thelength of the cylindrical elements 45 may, of course, be such that thepacking box is adapted to different structures, and the size of theflanges 67 may also be widely varied, and the distance betweenSpecification of Letters Patent.

Patented Mar. 25,1913.

them may be such that the box is adapted to diflerent uses. The packingmaterial is designated 90 and is positioned in close engagement with thepiston rod 1, the packing material being maintained in such engagementby means of the strap 10, one end of which is connected to the threadedextension 11 carrying a wing nut 12 bearing against a second nut 13,which in turn engages a cross piece 14 movably mounted on the studs 15which form part of the said flanges 6 and 7. Between the said flanges,and having one end in engagement with the said cross piece 14:, is awedge 16, the other end of which bears against a projection 17 on thesaid strap 10, whereby tightening the wing nut 12 on the threadedextension 11 will cause the strap 10 to bring the packing into closeengagement with the said piston rod. This arrangement of parts issubstantially described and claimed in the Letters Patent previouslyreferred to, the particular invention comprehended in this applicationbeing directed to improvements which will now be described.

Referring particularly to Fig. 3, it will be noted that the inside ofeach of the flanges 67 is provided with a circular pocket 18 in whichthe substantially circular plates 19 are positioned, these said plateshaving openings therethrough presenting a substantial fit for the pistonrod 1; the said packing 9 is between the flanges 67, and moreparticularly, is closely adjacent. the said circular plates 19. It willbe noted that the diameters of the pockets 18 are substantially greaterthan the diameters of the said plates 19, so that movement of the plateswithin the pockets is permitted within certain limits. Referring furtherto Fig. 3, openings 20 are shown within the said flanges 67, whichopenings are substantially equal to the inner diameter of thecylindrical elements d5, so that the piston rod 1 is permitted movementwithin certain limits inside of these cylindrical elements. The bottomwall of each of the pockets 18 in the said flanges 6 and 7 is providedwith a recess 21 communicating with the upwardly extending passageways22 in these said flanges by means of right-angularly extendingpassageways 23. Secured to the upper ends of the said flanges, andcommunicating with the said passageways and recesses, are oil cups 24,whereby lubrication may be provided for the engaging faces of the saidpockets 18 and plates 19.

It will be seen that it the glands 2-3 are fixed in position in theirrespective stuthng boxes, the packing box as an entirety will bemaintained substantially rigid in one position; it the piston rod is outof line so'that the longitudinal axis thereof with respect to thepacking material changes during reciprocation of the rod, free'movementof the packing material within the box is permitted, the piston rod andpacking material moving together to one side or the other of the saidlongitudinal axis; this movement is permitted by reason of the pockets18 in the said flanges 6-7, the movement of the plates 19 in thesepockets not interfering with the strap which brings about the pressureof the packing material, due to the fact that the ends of the saidthreaded member 11 and the said projection 17 on the strap, whichengages the wedge 16, are closely adjacent, as shown particularly inFig. 2, rocking movement being thereby permitted due to the particularconstruction of the second nut 13 on the threaded extension 11, and dueto the further fact that the outer end 16 of the said wedge 16 issubstantially in pivotal engagement with the said cross piece 14:. The

provision or" the recesses 21 and the passageways 22-23 provide for theapplication of a suitable lubrication to the plates 19, wherebyeiiiciency is promoted; the provision of the glands 2-3, with theircooperating stuffing boxes, prevents leakage directly from thecylinders; and the cylindrical elements 4-5 provide, as it were, ahousing for the piston rod in its movements, the interior diameter ofsuch housing being such that the piston rod may reciprocate in diflerentpositions within certain limits due to wear or the parts being out ofalinement.

Of course, the sizes of the'difl'erent parts and the dimensions of thefeatures of such parts are largely a matter of design in adapting thestructure to machines of different sizes and uses, it being apparentthat changes in such matters may be availed of without departing fromthe inventive idea.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. A packing box comprising spaced ele mentsprovided with pockets on their adjacent sides, packing material betweenthe elements adapted to surround a piston rod or equivalent element, andmeans engaging the packing andextending into the said pockets, wherebythe packing may follow the. piston rod when the same is moving.

2. A packing box of the floating type, comprising spaced elements,packing between the elements adapted to engage a piston rod orequivalent member, and plates adjacent the packing and in engagementwith the said spaced elements and movable relatively thereto, wherebythe packing may follow the piston rod when the same is moving out ofcenter.

3. In a structure of the class described, the combination of packingadapted to be placed on av piston rod or equivalent member, platessurrounding the piston rod adjacent the packing, spaced elementsconcentrically arranged with respect to the piston red, the said platesand packing being movable relatively to the saidspaced elements, wherebythe packing is permitted to follow the moving piston.

1. A structure of the class described, comprising packing adapted to beextended around a piston rod or equivalent member, plates adjacent thepacking, spaced elements adjacent the plates, and means for bringing thepacking into close engagement with the piston rod, the said means beingmovable, whereby the packing may follow the piston rod when the same ismoving out of center.

5. .The combination of packing adapted to be positioned on a piston rodor equivalent member, plates adjacent the packing ancl at oppositesides, spaced elements adjacent the plates, movably mounted meansadjustable in nature and engaging the packing, whereby the same may bebrought into close engagement with the piston rod, the

saidplates and the packing being movable relatively to the said spacedelements when the piston rod is working out of center, the said meansfor engaging the packing being also movable relatively to the saidspaced elements.

6. The combination of a piston rod or equivalent member, packingsurrounding the rod, plates adjacent opposite sides of the packing,spaced elements adjacent the plates, the elements being provided withpockets in which the plates are contained, whereby when the saidelements are fixed in position and the piston rod is moving, the saidplates and packing may move relatively to the said spaced elements inthe event that the piston rod runs out of center.

7. The combination of a piston rod or equivalent member, packingsurrounding the rod, plates adjacent the packing, spaced elements havingpockets on adjacent sides", the said plates being positioned within thepockets, means for bringing the packing into close engagement with thepiston rod, the said elements provided with the pockets being fixed inposition, whereby the packing at the said plates with the means engagingthe packing may follow the piston rod in its movement in the event thatsaid piston rod runs out of center.

8. The combination of packing adapted to be positioned on a piston rodor equiva-. lent member, plates adjacent opposite sides of the packingand provided with openings through Which the piston rod passes, and Intestimony whereof I have signed my spaced elements adjacent the platesproname to this specification in the presence of vided With openingssubstantially greater two subscribing Witnesses.

than the diameter of the said piston rod, WILLIAM T. SNELL. 5 wherebymovement of the rod, packing and Witnesses:

plates is permitted relatively to the other A. M. SMOCK,

spaced elements. W. G. HILLES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

